mysociety/sayit.mysociety.org — pull request #75 by duncanparkes (2014-11-11 09:41:44+00:00)
Title: Note packages needed to download https pages with SNI.

In order for python-requests to be able to download from
https sites using SNI (such as PopIt), it needs some
extra python packages

* pyOpenSSL
* ndg-httpsclient
* pyasn1

which require libffi-dev for compilation.